Well I play Ultima Online for free, also sometimes Meridian 59, and theres Drakker but its gay, you can try Mimesis Online which has a free 7 day trial and if you do want to keep playing it, its extremely cheap. Then theres games that are in beta that you could sign up for and play for free, like I am currently in beta for Earth and Beyond. Ill put up a list of links in a few minutes.